When a force of 2N acts on a mass of 2 kg for a time of 2s. what is the rate of change of momentum a)2 b)8 c)4 d)16
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Force = F = 2N
Mass = m = 2 kg
Time = t = 2s
As we know that Rate per change in Momentum is known as Force. However it is the Second Law of Sir Issac Newton.
F = 2
ma = 2
m(v-u)/t = 2
Consider, If initial Velocity of particle is zero.
mv/t = 2
2v/2 = 2
v = 2 m/s
P = √2km
P = √2.1/2mv².2
P = √2×2×2×2
P = 2 Kg m/s
Therefore, Change in Momentum = P = 2 Kgms-¹
K = Kinetic Energy of the particle.
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